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Finding the Fourth Proportional to 368.55, 550.46 and 307.67

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Solution

The fourth proportional to 368.55, 550.46 and 307.67 is: 459.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    368.55 : 550.46 = 307.67 : x
  2. Step 2: Convert to fraction form
    368.55/550.46 = 307.67/x
  3. Step 3: Cross multiply
    368.55x = 550.46 × 307.67
  4. Step 4: Simplify right side
    368.55x = 169,358.05
  5. Step 5: Solve for x
    x = 169,358.05/368.55
  6. Step 6: Final answer
    x = 459.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.